<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../UI/vue/vue.js"></script>
</head>
<body>
  <div id="root">
      <h2>今天天气{{info}}</h2>
      <button @click="change">切换天气</button>
  </div>
  <script>
Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。
    const vm = new Vue({
        el: '#root',
        data: {
            isHot:true
        },
        methods:{
            change(){
                this.isHot=!this.isHot
            }
        },
        computed: {
            info(){
                return this.isHot?'炎热':'凉爽'
            }
        },
    })
  </script>
</body>
</html>